Cutting mechanism.



Ljo. PALMER.

CUTTING MECHANISM.

APPLICATION FILED DEO. 17, 1910.

Patented July 15, 1.913

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2 SHEETS-SHEET l.

llllllp- WIT/VES ES:

L. C. PALMER.

CUTTING MEGHANISM.

APPLIOATION FILED DEO. 17, 1910.

0,69 Patented July 15, 1913.

2 SHEETSSHEET 2.

tvtmolv o. PALMER, or BUFFALO, NEW YORK, AssteNon 'ro '.rni F. N. anni:COMPANY,

LIMITED, 0]? BUFEALO, NEW YORK, CORPORATION 0F comme Musi-ramera.

To all whom if may concern:

Be it known that l, LYNDON C. PALMER, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented certain new and useful Improvements in Cutting Mechanism, ofwhich the following is a full, clear, and eXact description, such aswill enable others skilled in the art to which it appertains to make anduse the same.

rlhis invention relates to machinery for cutting, slitting lor severingpaper, cardboard, strawboard and similar materials, and especially tomachinery for cutting cardboard or strawboard.

One object of the invent-ion is the provision of mechanism forefliciently slitting or severing cardboard or strawboard, etc.,accurately so as to provide a smooth and even ed e. i nother object isthe provision of a practical cutting mechanism wherewith narrow stripsof material of the character referred to may be produced rapidly andcontinuously, and without distortion.

Another object of the invention is the provision of efficacious means tocut strips from double thicknesses of material, of thel character abovereferred to, such las a folded tube, andproduce a narrow continuousstrip adapted to be used as a side or lflange in the manufacture of abox.

Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the. features of construction,combinations of elements and arrangement of parts which will beexemplified in the construction hereinafter set forth, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawings, which form 'part of this specification,and in which similar characters refer to similar parts throughout theseveral views, Figure l is a plan view of the machine partly broken awayfor a more clear disclosure; Fig. 2 is a front elevation of the machine;Fig. 3 is a Vertical section of the machine; Fig. 4 is an enlarged viewin elevation, partly in section, showing the cooperative arrangement ofthe cutters or slitters; Eig. 5 represents a rectangular tube flattenedor closed and in condition to be presented to the slitting mechanism,the vdotted lines indicating the Specification of Letters Patent.

Application led ece'mber 17, i910.

Fetten-ted duly l5, llgll. serial' no. teams'.

strips to be cut therefrom;` and llTig. 6 represents one of a series ofstrips into which the flattened tube is cut, the strip being open. v

The numeral 1 represents a table or horizontal support for the operativeparts of the apparatus, and comprises legs 2. At each end' of the tableare standards 3 in which are journaled horizontal parallel shafts 4 and5 preferably located one above the other. Mounted on each shaft, andpreferably concentric thereto, are a series of cutting elements,cutters, or circular knives 6 and 7, alternating on each shaft withannular spacing devices or collars 8 and 9. The cutters and collars oneach shaft not only alternate with each other, but with the cutters andcollars of the other shaft, so that a cutter on one shaft is opposite acollar of the opposite shaft, and vice versa. Each cutter preferablycomprises a collar, disk, or body having oppositely beveled or inclined,and preferably concave, peripheral surfaces and flat outer walls orheads, and the walls and concave surfaces approirimate, merge or meet ina cutting edge at each edge of each cutter, thus providing adouble-edged cutter with the concave surface intervening the cuttingedges. The spacing devices or collars are less in diameter than thecutters, and with the cutters form concentric spaces bounded on threesides by the twov flat eX- tended portions of the walls of the cuttersand the periphery of the collar. The shafts 4.- and 5 are so disposedthat the cutters intermesh, the Walls of the cutters on one ,shaftoverlapping those of the cutters on the opposite shaft within the spacesabove referred to, the edges of one cutter coperating with an edge oftwo opposite and alternately'- arran ed Cutters in the shearingoperation. T e cutters and collars are preferably separate orindependent elements of the same size on both shafts, and after be'- ingthreaded on their respective shafts and arranged as above described, aresecured in position thereon in any efficient manner, preferably by meansof an abutment 10 and a clamping nut 11, which latter cooperates withthe screw threads 12 and admits of ad 4iustment both to clamp thecutters and collars in place or to permit their removal. Preferably oneseries of cutters is located Iabove the table or platform, the othercooperative series being located below the table, the cuttersintermeshing and performing vtheir cutting operation in substantiallythe plane of the table. In operation the cutv ters rotateon. their axes,and to effect this the cutter shafts are provided at one' end outsidethe standard with'gear wheels 13` and 14, of suitable size, which meshwith each other, one of the shafts being driven by an attached beltpulley at its end opposite the gear, a suitable belt shifter beingmounted to slide in guides on the top of the standards and provided withan operating handle.

Cutters arranged as above described may be efficiently employed inproducstripsl but are especially e cacious in the production of narrowstrips of cardboard or strawboard, sa one-fourth inch or less in width,such asis employed in the manufacture of small boxes. Such narrow stripshave a tendency to become distorted,

dotted lines in said figure. By the .herein described construction thematerial is cut in planes substantially perpendicular to the plane ofthe material, passageway being provided opposite each severed portionthrough which the severed strip maybe moved either longitudinally orlaterally Without 'coming into contact with any part having a tendencyto obstruct or distort it. The passageways opposite each cutter compriseside walls substantially in line with the heads lof the cutters sothatgthe severed strip readily passes therethrough at vany portionAthereo this movement being confined only by the opposing collar. In thepresent embodiment of the invention the passageways above referred toare substanthe only.

tially rectangular in cross section deviation from this shape being dueto the concave face of the cutter. It is evident, however, that other tyes of, passageway might be provided capa' le of effecting the freedisposition of the cut strips without departing from the spirit of thisinvention.

In order to ositively prevent any tendency of the strips to follow thecutter. after having been severed means are provided for' defiecting oruiding them asthey leave the cutters. In tie present instance the guidesor deflectors comprise stationary strippers or stripp r fingers 17 and18 located opposite eac cutter. Said fingers prefera ly comprise aseries of bars secured at one side of the cutters to supports 19 and 2Oextendtable.

ing lengthwise of the series and fastened to some convenient. portion ofthe frame ofthey The fingers project from said bars respectively andpass between the two cutter rollers, each fingerpreferably beingslightly curved in order to conform somewhat to the collar upon which itmay rest. The fingers pass respectively through the spaces or channelsbetween the cutters and the-collars provided by the arrangementdescribed, there being a stripper finger opposite each cutter andsituated between the edges of two adjacent cutters of the other series.Preferably the guide-bars or fingers 17 have their lateral edges closelyadjacent the sides of the adjacent cutters, and said bars are disposedwith their faces relatively close to the concave peripheries of thecutters of the seriesopposed thereto, thus providing means forefficiently severing narrow strips of material on right lines. The outeror free ends of the fingers incline from the surfaces of the respectivecutters preferably in a curve, as clearly shown, anddeflect the strips,preventing them from being carried around with'the cutters. Suitablysupported upon the frameso asv to rest against the edges of the aboveseries of cutters are strips 21 of felt, fiannel or other material,adapted to serve as clearers for t-he cutters. The platform or table 1extends a sufiicient distance in front of the cutting mechanism toiprovide space thereon for'the reception o sheets or strips of thematerial to be cut. These sheets or strips are designed to be pushedalong the surface of the table `to the cutters, through which they willbe automatically drawn in the cutting operation. The strips are guidedtoward the cutters and kept in position upon the table by an overhangingcurved guiding plate 22 terminating near the surface of the table andproperly secured to.tl1e frame. The upper surface of the table in frontof the cutters is slotted as at 23 and a pusher comprising a plate 24,having a flange 25 and a handle 26 is mounted to reciprocate in saidslot, offering efficient andefiicacious means for accurately feeding orpushing the material into position to be cut.

' In the construction illustrated it will be observed that two sizes ofcutters are employed, those to the right being of smaller gage thanthose to the left of the center.

It will also be noted that two pushers are-120- employed, one before,each of the rows of different size. By this arrangement one end oftheslitting mechanism may be employed to cut a multiplicit of strips ofoneY size, and the other end o the mechanism may be employed to cut amultiplicity of strips of a different size.. By this relativearrangement one is enabled to sever large sheets into comparatively widestrips at one` end of the machine and subsequently cut tlie severedstrips into narrower strips by employing the other tially the plane otthe `below end of the machine and strips transversely thereto.

It will be observed that the disposition of the cutters and collarsprovides asevering mechanism which shears the material and presses itinto the openings or channels provided opposite the cutters, and in thisrespect the mechanism provides a means to punch strips from a sheet ofmaterial, the product being pressed in opposite directions.

lt will thus be seen that by the mechanism hereinbefore described l haveprovided a machine which accomplishes, among others, the several objectsof the invention herein before described.

As many changes could be made in the above construction and manyapparently widelyrditferent embodiments of this invention could be madewithout departing trom the scope thereof, it is intended that all mattercontained inthe above description or shown in the accompanying drawingsshall be interpreted as illustrative and not in a limiting sense. lt isalso to be understood feeding the long `that the language used in thefollowing claims is intende to cover all of the generic and specificfeatures of the invention herein described and all statements of thescope of the invention, which, as a matter ot language, might be said tofall therebetween.

aving described my invention, what l claim as new and desire to secureby Letters Patent is 1 l. lln an apparatus of the character described,in combination, a table, a plurality ot parallel series of spaceddouble-edged rotary cutters, the cutters of one series intermeshing withthose of another in substantially the plane of the table, stripper ngershaving oneend secured in planes above and the table respectively andhaving free ends extending in opposite direct-ions beyond the edges ofthe cutters, and a pusher adapted to move on the table to feed materialto the cutters.

2. ln an apparatus ofthe character' de scribed, in combination, a table,a plurality of parallel series ofspaced double-edged ro,- tary cutters,meshing with those of-another in substantable, stripper iingers havingone end secured in planes above and below thetable respectively andhaving free ends extending in opposite `directions beyond the edges ofthe cutters, a pusher adapted to move on the table to feed Inaterial tothe cutters, and means to guide the material to the cutters. c

3. lin an apparatus of the character de` scribed, incombination, atable, a plurality ot parallel series of spaced double-edged rotaryc.utters,'the cutters of one series intermeshing with those of anotherin substantially the plane of the table, stripper ngers the cutters ofone series inter-- scribed, in co-mbination, a shaft, alternate collarsand rotary cutters secured thereto, and stripper fingers extendingbetween the cutters and comprising portions conforming to and restinglagainst the outer peripheral surface of the collars.

5. In an apparatus of the character described, in combination, a table,a pair of cutting rollers located above and below the table respectivelyand cooperating in substantiallythe plane of the table, a pusher adaptedto feed material from the table to the cutter, and means to guide the`material to the cutter.

6. lin an apparatus of the character dcscribed, in combination, a table,a plurality of parallel series of spaced double edged rotary cutters,the cutters of one series intermeshing with those of another ,insubstantially the plane of the table, stripper fingers projectingbetween the cutters, a pusher adapted to move on the table to reedmaterial to the cutter, and means to guide the material to the cutters.

7. ln an apparatus ot the character described, in combination, a tablehaving a slotted surface, and a'pusher plate on the table having adepending portion guided in the slot and adapted -to reciprocate withrcspect .to the table. n, y

t3. In an apparatus of the character described, in combination., atable, a pair ot parallel series otrot-ary double-edged cutters havinglconcave peripheries located above and below the table respectively andcoperating in substantially the plane et the n table, a pusher adaptedto feed material from the table to the cutters, and means to guide thematerial from the cutters.

9. lin an apparatus of the character described, in combination, a table,a pair of parallel series of spaced rotary do uble-e dged cutters havingconcave peripheries located above and below the. table respectively andcoperatin in substantially the plane ot the table, t e cutters ot oneseries intermeshing with those of the other, a pusher adapted to feedmaterial from the table to the cutters, and strippertingers extendingbetween the series of cutters and between the cutters of each series.

'10. In an apparatus ofthe character described, in combination, a pairof parallel series of spaced rotary double-edged cut-ters, havingconcave peripheries, the cutters of one series intermeshing with thoseof another, and stripper fingers extending between the cutters of eachseries and between each series of cutters, whereby short lengths of cutmaterial will be stripped from the cutters.

11. In an apparatus of the character de-' scribed, in combination, a`air of parallel series of spaced rotary doub e-edged cutters, thecutters of o-ne series intermcshing with those of the other, and meansextending between the/ cutters of each series and between vthe series ofcutters from one side to the other to guide the material to and from thecutters.

12. In an apparatus of the character described, `in combination, atable, a pair of parallel series of spaced double-edged rotary cutters,the cutters of one series intermeshing with those of another, a pusheyvadapted to feed material from the table te the cutters, and meansextending between l the cutters 4of each series, and between the soA 'ing gears on each shaft, means to drive said' gears, each cuttercomprising a concave periphery providing a double-edgedcutter,

` and bars extending between each shaft and the cutters on theoppositefshaft and spaced from the cutting plane providing al guidingand deiiecting elementy for each cutter.

14.- In an apparatus of t-he character described, in combination, a pairof parallel series of spaced rotary doublefedged cutters having concaveperipheries, the cutters of one series intermeshing withy those of theother, and ide bars o osite the peri her ofthe cuttil'ls of each sleiesand closelgT ad5i jacent said periphery adapted to maint-ain the path'ofmovement of the material so that it is cut in vright lines.

15. In an ap aratus of the character describedgin com ination, a air ofparallel series of spaced rotary doub e-edged cutters having concaveperipheries, the cutters of one series intermeshing with those of theother., and guide bars opposite the periphery of the cutters of eachseries and closely adjacent said periphery andthe sides of adjacentcutters of the respective series adapted to maintain, the path ofymovement of the material so that' it is cut in right lines.

16. In an apparatus of the character described, in combination, a pairof parallel series of spaced rotary double-edged cutters having concavepcripheries, the cutters -of one series intermeshing with those of theother, and curved guide bars opposite the l periphery of the cutters ofeach series and closely adjacent said periphery adapted tol maintain thepath of lmovement of the material so that it is cut in right lines.

17. In an apparatus of the character described, in combination, a pairof parallel series of spaced rotary double-edged cutters having concaveperipheries, the cutters of one series intermeshing with those of theother, and guide bars extending between the cutters of each seriesandbetween each series of cutters, the lateral edges of the guide barsbeing closely adjacent the sides of adjacent cutters ofthe respectiveseries, and the faces of said bars being closely adjacent the peripheryof the opposed cutters.

In testimony whereof I affix my signature, in the presence of twowitnesses.

LYNDON C. PALMER.

